Archive for 2012

When the North Atlantic Oscillation is negative, Greenland is mild with an upper level ridge of high pressure overhead. Temperatures are often at or above -18C or 0F, which is warm compared to normal here during winter. This pattern tends to promote colder weather for eastern North America and western Europe, but when there is a positive NAO, it’s the […]

After this weekend’s snow across the Midwest and Northeast, two shots of arctic air will follow. The first shot drops over the region tonight as a high builds overhead but this will be short lived as another system spreads northeast later Monday into New Years Day. That system will enhance clouds and may produce some […]

Scotland New Year’s Eve starts off wet and windy and those winds are expected to increase during the morning and into early afternoon as a front pushes through. The rain should clear most areas by early and mid afternoon but despite brightening of the skies, heavy showers will rattle in on a stiff and cold west […]

The next and last system of the year will spread more wind and rain across the UK tonight and tomorrow, making for a wet end to a record wet year. The good news is that, for most, we should see a drier, cooler close to New Year’s Eve but there will be a few exceptions.. Heavy showers will follow […]

The latest in a series of big winter storms, named Freyr has dumped a further and impressive 6-12″ swath of snow through the Ohio Valley and Northeast. This latest system has helped deepen the snowpack or, for some, added snow to places which were bare. This entire pattern which kicked in the week before Christmas looks […]

With the current stratospheric warming taking place over the Asian side of the pole and the shift in the coldest pool of air on earth I think we have a very interesting January ahead with a heck of a lot of winter to come. It’s the combination of what we’ve seen so far across a large part […]

Asia took centre stage for cold across the hemisphere during December but as you’ll see from the below stratospheric temp charts, a significant warming episode is underway on the Asian side of the pole. This not only suggests a milder month to come in the very areas which have seen one of, if not the […]

The system which just barrelled through the Northeast, whitened most of the region but missed the I-95 corridor and the coastal areas. A new system now organising over the Mid-South will push northeast and is likely to fill in the areas the last system missed. Most models have the storm tracking due NE and just […]

While the majority of Europe is mild with a westerly flow off the Atlantic, changes are afoot later next week as colder air is set to return to the east and north of the continent. If you live in Moscow and other eastern cities, enjoy the current mild spell as it’s living on borrowed time. You are likely […]

Scotland Further outbreaks of rain will continue to keep the flood risk in place but it’s the milder air combined with the rain which is melting the snow over parts of the Highlands and this is creating the greatest flood risk. Through tonight and rain will be largely confined to the west but it’s the wind […]